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Finding the Fourth Proportional to 424,990.52, 637,602.20 and 125,471

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Solution

The fourth proportional to 424,990.52, 637,602.20 and 125,471 is: 188,240.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,990.52 : 637,602.20 = 125,471 : x
  2. Step 2: Convert to fraction form
    424,990.52/637,602.20 = 125,471/x
  3. Step 3: Cross multiply
    424,990.52x = 637,602.20 × 125,471
  4. Step 4: Simplify right side
    424,990.52x = 80,000,585,636.20
  5. Step 5: Solve for x
    x = 80,000,585,636.20/424,990.52
  6. Step 6: Final answer
    x = 188,240.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.